import random
from turtledemo import clock

import pygame

from game_hud import *


class Game(object):
    """游戏类"""
    def __init__(self):
        #游戏主窗口
        self.main_window = pygame.display.set_mode(SCREEN_RECT.size)
        pygame.display.set_caption("飞机大战")
        #游戏状态属性
        self.is_game_over = False
        self.is_pause = False
        # 精灵组属性
        self.all_group = pygame.sprite.Group()
        self.enemies_group = pygame.sprite.Group()
        self.supplies_group = pygame.sprite.Group()
        # 创建精灵
        #背景精灵，交替滚动
        self.all_group.add(Background(False), Background(True))
        # 指示器面板
        self.hud_panel = HudPanel(self.all_group)
        # 创建敌机
        self.create_enemies()
        # 英雄精灵
        self.hero = Hero(self.all_group)
        # 设置面板中炸弹的数量
        self.hud_panel.show_bomb(self.hero.bomb_count)
        # 背景精灵，向下方移动
        GameSprite("background.png", 1, self.all_group)
        # 英雄精灵，静止不动
        # hero = GameSprite("me1.png",0,self.all_group)
        # hero.rect.center = SCREEN_RECT.center
        # hero = Plane(["me%d.png" % i for i in range(1,3)],self.all_group)
        # hero.rect.center = SCREEN_RECT.center
        # 英雄精灵，静止不动
        self.hero = Plane(1000, 5, 0, "me_down.wav",
                          ["me%d.png" % i for i in range(1, 3)],
                          "me1.png", ["me_destroy_%d.png" % i for i in range(1, 5)],
                          self.all_group)
        self.hero.rect.center = SCREEN_RECT.center

    def reset_game(self):
        """重置游戏"""
        self.is_game_over = False
        self.is_pause = False
        self.hud_panel.reset_panel()
#定义event_handler()方法
    @property
    def event_handler(self):
        """事件监听
        :return：如果监听到退出事件，返回True，否则返回False
        """
        for event in pygame.event.get():
            # 判断是否正在游戏
            if not self.is_game_over and not self.is_pause:
                # 监听玩家按下”b“键，引爆1颗炸弹
                if event.type == pygame.KEYDOWN and event.key == pygame.K_b:
                    # TODO测试炸毁所有敌机
                    for enemy in self.enemies_group.sprites():
                        enemy.hp = 0
                    # TODO测试炸弹数量变化
                    self.hud_panel.show_bomb(random.randint(0, 100))
                    # TODO测试生命计数数量
                    self.hud_panel.lives_count = random.randint(0, 10)
                    self.hud_panel.show_lives()
                    # 引爆炸弹
                    score = self.hero.blowup(self.enemies_group)
                    # 更新炸弹数量显示
                    self.hud_panel.show_bomb(self.hero.bomb_count)
                    # 更新游戏得分，若卡关等级提升，则可创建新类型的敌机
                    if self.hud_panel.increase_score(score):
                        self.create_enemies()
            if event.type == pygame.QUIT:
                return True
            elif event.type == pygame.KEYDOWN and event.key == pygame.K_ESCAPE:
                return True
            elif event.type == pygame.KEYDOWN and event.key == pygame.K_SPACE:
                if self.is_game_over:
                    self.reset_game()
                else:
                    self.is_pause = not self.is_pause
            return False
#定义start()方法
    def start(self):
        """开始游戏"""
        class = pygame.time.Clock()
        frame_counter = 0
        while True:
            # 生命计数等于0，表示游戏结束
            self.is_game_over = self.hud_panel.lives_count == 0
            if self.event_handler():
                self.hud_panel.save_best_score()
                return
                # 判断游戏状态
            if self.is_game_over:
                self.hud_panel.panel_pause(True, self.all_group)
                # print("游戏已经结束，按空格键重新开始...")
            elif self.is_pause:
                self.hud_panel.panel_pause(False, self.all_group)
                # print("游戏已经暂停,按空格键继续...")
            else:
                self.hud_panel.panel_resume(self.all_group)
                # 碰撞检测
                self.check_collide()
                 # # 测试修改游戏得分
                 # if self.hud_panel.increase_score(100):
                 #     print("升级到 %d" % self.hud_panel.level)
                 #     self.create_enemies()
                 # 获得当前时刻的按键元素
                 keys = pygame.key.get_pressed()
                 # 判断是否按下右方向键
                if keys[pygame.K_RIGHT]:
                    self.hero.rect.x += 10
                 # 水平移动基数
                move_hor = keys[pygame.K_RIGHT] - keys[pygame.K_LEFT]
                 # 垂直移动基数
                move_ver = keys[pygame.K_DOWN] - keys[pygame.K_UP]
                 # 修改逐帧动画计数器
                 frame_counter = (frame_counter + 1) % FRAME_INTERVAL
                 # 更新 all_group 中所有精灵内容
                 self.all_group.update(frame_counter == 0, move_hor, move_ver)
                 # 更新 all_group中所有精灵内容
                 self.all_group.update(frame_counter == 0)
                # 绘制 all_group中的所有精灵
                self.all_group.draw(self.main_window)
            pygame.display.update()
            clock.tick(60)

    def create_enemies(self):
        """根据关卡级别创建不同数量的敌机"""
        #敌机精灵组中的精灵数量
        count = len(self.enemies_group.sprites())
        #要添加到的精灵组
        groups = (self.all_group,self.enemies_group)
        #判断关卡级别及已有的敌机数量
        if self.hud_panel.level == 1 and count == 0:
            for i in range(16):
                Enemy(0,3,*groups)
        elif self.hud_panel.level == 2 and count == 16:
            #提高敌机的最大速度
            for enemy in self.enemies_group.sprites():
                enemy.max_speed = 5
            #创建敌机
            for i in range(8):
                Enemy(0,5,*groups)
            for i in range(2):
                Enemy(1,1,*groups)
        elif self.hud_panel.level == 3 and count == 26:
            #提高敌机的最大速度
            for enemy in self.enemies_group.sprites():
                enemy.max_speed = 7 if enemy.kind == 0 else 3
            #创建敌机
            for i in range(8):
                Enemy(0,7,*groups)
            for i in range(2):
                Enemy(1,3,*groups)
            for i in range(2):
                Enemy(2,1,*groups)


    def check_collide(self):
        """碰撞检测"""
        # 检测英雄飞机和敌机的碰撞，若英雄飞机处于无敌状态，彼此不能碰撞
        collide_enemies = pygame.sprite.spritecollide(self.hero,
                                                  self.enemies_group, False,
                                                      pygame.sprite.collide_mask)
        for enemy in collide_enemies:
            enemy.hp = 0

if __name__ == '__main__':
    pygame.init()
    Game().start()
    pygame.quit()
